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Formation Pore Pressure Prediction and Application Based on Aacoustic Logging
Cejing jishu, 2023 Formation pore pressure prediction is an important factor in the study of wellbore stability. Accurate prediction of pore pressure can avoid safety problems, such as overflow and blowout, thereby improving drilling efficiency, reducing environmental ...
QI Wenli +4 more
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Energy Exploration & Exploitation, 2023 ROP (Rate of Penetration) is a comprehensive indicator of the rock drilling process and how efficiently predicting drilling rates is important to optimize resource allocation, reduce drilling costs and manage drilling hazards.
Wei Liu +4 more
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Improving Thermal Stability of Starch in Formate Fluids for Drilling High Temperature Shales [PDF]
Journal of Petroleum Science and Technology, 2012 Starch is one of the most widely used biopolymers in water based drilling fluids to control fluid loss. The thermal stability of starch in common drilling fluids is low (93 °C).
M. Valizadeh, ali reza nasire
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The Effect of Additive ZRJ-S1 on Mechanical Properties of Portland Cement
Advances in Materials Science and Engineering, 2022 For mechanical performance perfection of cement-based material, toughening materials are often added to the cement system, such as solid particles, carbon-based material, or other inorganic/organic materials.
Xin Zeng +6 more
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Frontiers in Earth Science, 2023 The existence of gravels in the glutenite formations leads to the complex geometries of hydraulic fracturing propagation and difficult construction in fracturing engineering. To study the hydraulic fracturing propagation law of glutenite formations, this
Peng Tan +19 more
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Cutting mechanism of a special 3D concave-shaped PDC cutter applicable to the Weiyuan shale
Journal of Petroleum Exploration and Production Technology, 2023 The Weiyuan shale gas field faces problems of long drilling cycles and high development costs. Improving the drilling efficiency of polycrystalline diamond compact bits in shale formations will significantly reduce the overall well cost and duration ...
Xiaohua Ke +5 more
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Journal of Petroleum Exploration and Production Technology, 2023 Multistage fracturing technology is the primary means of reservoir stimulation in shale gas wells. However, the productivity contribution of each stage varies greatly.
Shanyong Liu +3 more
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Are Highly Motivated Learners More Likely to Complete a Computer Programming MOOC?
International Review of Research in Open and Distributed Learning, 2021 Computer programming MOOCs attract people who have different motivations. Previous studies have hypothesized that the motivation declared before starting the course can be an important predictor of distinctive dropout rates.
Piret Luik, Marina Lepp
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On the joint continuity of module multiplication [PDF]
Proceedings of the Estonian Academy of Sciences, 2023 Let A be any topological algebra over R or C. We show that the property of a topological left (right or two-sided) A-module to have a jointly continuous action of A is inherited by submodules, quotient modules, completion, direct products, direct sums ...
Mart Abel
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Flow Field and Pressure Loss Characteristics at Rotary Drillstring Joints
Geofluids, 2023 A thorough understanding and accurate calculation of the annulus pressure losses are paramount to drilling design and construction. However, due to the influence of the drillstring rotation and the abrupt dimensional variation at the joint, it is ...
Minghu Nie +5 more
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